Single Cell Lithium-Ion Charge Management Controller The MCP73826 is a battery charger controller for single cell Li-Ion batteries. Using an external Pmos transistor, safe and fast charging ... The MCP73826 is a battery charger controller for single cell Li-Ion batteries. Using an external Pmos transistor, safe and fast charging of a single Li-Ion cell is accomplished. An overall system accuracy of 1% ensures that the cell capaci